linux-kernel - [PATCH 5.4 68/85] pcmcia: i82092: fix a null pointer dereference bug

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Date:   Tue, 10 Aug 2021 19:30:41 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Zheyu Ma <zheyuma97@...il.com>,
        Dominik Brodowski <linux@...inikbrodowski.net>
Subject: [PATCH 5.4 68/85] pcmcia: i82092: fix a null pointer dereference bug

From: Zheyu Ma <zheyuma97@...il.com>

commit e39cdacf2f664b09029e7c1eb354c91a20c367af upstream.

During the driver loading process, the 'dev' field was not assigned, but
the 'dev' field was referenced in the subsequent 'i82092aa_set_mem_map'
function.

Signed-off-by: Zheyu Ma <zheyuma97@...il.com>
CC: <stable@...r.kernel.org>
[linux@...inikbrodowski.net: shorten commit message, add Cc to stable]
Signed-off-by: Dominik Brodowski <linux@...inikbrodowski.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/pcmcia/i82092.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/pcmcia/i82092.c
+++ b/drivers/pcmcia/i82092.c
@@ -106,6 +106,7 @@ static int i82092aa_pci_probe(struct pci
 	for (i = 0;i<socket_count;i++) {
 		sockets[i].card_state = 1; /* 1 = present but empty */
 		sockets[i].io_base = pci_resource_start(dev, 0);
+		sockets[i].dev = dev;
 		sockets[i].socket.features |= SS_CAP_PCCARD;
 		sockets[i].socket.map_size = 0x1000;
 		sockets[i].socket.irq_mask = 0;